Internal-combustion motor



Aug. 16, 1921. 1,639,287

2. w. DAVIS INTERNAL COMBUSTION MOTOR Filed se a. 85 1925 4 v ywwfiz f aworneqq Patented Aug. 16, 1927.

1E3 w. DAVIS, or noose-on, Texas.-

amn aNeL-commsmmn MOLEQR.

. Application filed. September a, 4925. serial m. 55,062.

This invention ..relates to mew and useful improvements in an internal combustion motor. I i

.(Dne obj ectof .the invention is to produce a motor-.ofthe character described equipped with novel means for .controlling the intake and exhaust valves, whereby all val veactuating gearsand cams .nowtcommonly annployed, may be eliminated and the valve controlling mechanism simplified.

Another object of the invention is to produce a motor of the character described which is of very simple construction and has few moving parts and consequently may be cheaply produced, and easily kept in repair.

With the above and other objects in view this invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein The figure shows a' vertical sectional view of the motor with a diagrammatic view of the starter and the electric wiring therefor.

Referring now more particularly to the drawing the numeral 1 designates the motor crank case and the numeral 2 designates a cylinder mounted thereon. The numeral3 designates the carburetor, leading from which, to the cylinder there is the intake pi e 4. This intake pipe is equipped with t e usual intake valve 5 having the stem 6, which forms the core of the electro-magnet 7. The valve 5 is made accessible through the removable plug 8.

'The exhaust manifold 9 is controlled by the exhaust valve 10 which is fixed to the outwardly projecting stem 11, which is slidable through a bearing 12 carried by the cylinder head. A rocker arm 13 is mounted on the cylinder with one end resting against the outer end of the stem 11.

Located at any convenient place, and preferably anchored to the side of the cylinder 2, there is an auxiliary cylinder 14, with a plunger 15 therein, having a plunger rod 16 which works through a stufiing box 17 carried by the auxiliary cylinder 14, and whose free end is pivoted to the other end of the rocker arm 13. A port 18 connects the chambers of the cylinders 2 and 14.

The motor has the usual crank shaft 19 and piston 20 connected therewith in the usual way, operable in the cylinder 2.

During the normal operation ofthe motor the valve .5 is alternately lifted .to admit the charge by suction and seated by pressure in the oylinde'r v.1. Just before the piston reaches the endo'f theiback str ke-it uncove s the port l8. and upon each -.power str oke fluid under pressure is admitted into the cylinder 14 heneath the plunger 1.?) and this plunge .iS..,tl11lQy aactnatejdland operating through the rod lfiza'ntl .rocker .arni .13.0p.1 s the .exhaust valve .l-.0..and permits exhaust .of th spent gases. Upon the next forward stroke when the port 18 is cleared by the inner end of the piston-compression in the cylinder 14 will be relieved and the valve 10 will be closed by the spring 26, which also operates to return the plunger to original, or starting position.

The numeral 21 designates the starter. which is wired in circuit with the battery 22 and also the electromagnet 7. The wiring has the usual starting switch, 23.

The intake pipe has a back pressure valve 24, and located between it and the intake valve 5 there is an outlet valve 25.

There is a timer 27 in the electrical circuit, and this circuit also has a switch 28,

which is opened by the rod 16, when the same is actuated to open the valve 10, and closed when the rod 16 returns to starting position.

The timer 27 embodies the well known principle of construction but is so arranged that when the starter switch 23, is closed, and the starter is operating to start the motor, should the charge fail to fire the switch 28 will remain closed completing a circuit through the magnet 7, thus holding the valve 5 open and permitting the discharge of the unignited charge through the valve 25.

What I claim is:

1. An internal combustion motor including a cylinder having an intake and an exhaust manifold, valves controlling said manifolds, means for actuating the exhaust valve, an electromagnet associated with the intake valve and adapted, when energized to hold the same in open position, an electrical circuit into which the magnet is connected and a switch associated with the valve actuating means through which the circuit may be alternately completed and broken.

2. An internal combustion motor including a cylinder having an intake and an exhaust manifold, valves controlling said manifolds, means for actuating the exhaust valve,- an electromagnet associated with the intake valve and adapted, when energized to hold the same in open position, all in combination with a source of electrical energy wired in circuit with said magnet, and means controlled by said valve actuating means for completing and breaking said circuit.

3. In an internal combustion motor having a cylinder, an intake and an exhaust mani fold, and having a carburetor, a back pressure valve and an outlet valve associated with said intake manifold; intake and exhaust valves controlling said manifolds, means for actuating the exhaust valve, an electromagnet associated with the intake valve and adapted, When energized, to hold the same in open position, a source of electrical energy wired in circuit with said electromagnet and means associated with said valve actuating means and operablevthereby for completing and breaking said circuit.

4. In an internal combustion motor having a cylinder, a reciprocable piston therein, an intake and an exhaust passageway connected into the cylinder with an exhaust valve controlling the exhaust passageway and means for actuating said valve; a safety device comprising an intake valve adapted to open and close said intake passageway, an electro-magnet associated with said intake valve and holding the intake valve open when energized, an electrical circuit into which said magnet and the exhaust valve actuating means are connected, said last mentioned means also including a switch adapted to complete, and break said circuit.

In testimony whereof I have signed my name to this specification.

ZEIB W. DAVIS. 

